At least one Iraqi civilian was killed and two U.S. military police soldiers were wounded in Baghdad on Sunday when an explosion targeted a U.S. convoy, the latest in a series of hit-and-run strikes on occupation forces. Hours earlier in a separate incident Saturday night, attackers lobbed two grenades near U.S. soldiers guarding the Iraqi National Museum, the soldiers said. The Americans escaped harm but a neighboring store was damaged. There were no casualties. "We do not know if it intended to hit our position or to hit that little store that is down there. Both grenades exploded near that store," said John Kuzar, one of the soldiers guarding the museum. A U.S. military spokesman said the two wounded Americans from the convoy were evacuated to a military hospital. There were no details on exactly how the Iraqi civilian died. Two military vehicles were damaged, the spokesman said. At least 22 Americans have been killed by hostile fire since President Bush declared major combat over on May 1. Two others were found dead in unclear circumstances on Saturday. Six British military police were killed in the south of Iraq Tuesday. The attacks have also hit Iraqi bystanders. Friday two Iraqis were injured in a town outside Baghdad when a U.S. convoy was targeted by explosives. **PHOTO CAPTION*** Two men arrested for hidding several weapons try to argue with US soldiers from the 1st Armored Division at a Baghdad neighborhood, Saturday, June 28, 2003. (AP Photo/Victor R. Caivano)